Increasing the coherence time of Bose-Einstein-condensate interferometers with optical control of dynamics

Details Increasing the coherence time of Bose-Einstein-condensate interferometers with optical control of dynamics Increasing the coherence time of Bose-Einstein-condensate interferometers with optical control of dynamics

2007-01-16

arxiv.org/abs/physics/0701191v1

Physics

Atomic Physics

34 Pages, 8 Figures

Scientific paper

10.1103/PhysRevA.75.063603

Atom interferometers using Bose-Einstein condensate that is confined in a waveguide and manipulated by optical pulses have been limited by their short coherence times. We present a theoretical model that offers a physically simple explanation for the loss of contrast and propose the method for increasing the fringe contrast by recombining the atoms at a different time. A simple, quantitatively accurate, analytical expression for the optimized recombination time is presented and used to place limits on the physical parameters for which the contrast may be recovered.

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